What does the Biasi E02 + RESET fault code mean?

Your boiler has shut itself down because it detected that the internal water temperature has become too hot.

How much does it cost to fix Biasi error code E02 + RESET?

Typical repair cost for the Biasi E02 + RESET fault is £90-250 including labour.

Check that all radiator valves are fully open to allow water flow

Safety thermostat intervention lockout

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.

Work through these before the call-out.